The Mercedes-Benz GLB should be manageable in city use when judged against its listed dimensions. Key size figures include 2025 GLB 250 4MATIC AMG Line FL: 4634 mm; 2025 GLB 200 Progressive Line FL: 4634 mm; 2025 GLB 250 4MATIC AMG Line FL: 2020 mm; 2025 GLB 200 Progressive Line FL: 2020 mm; 2025 GLB 250 4MATIC AMG Line FL: 1692 mm; 5 more variants. Length affects parking ease, width affects tight ramps and urban lanes, while wheelbase gives a clue to cabin comfort and highway stability.